Sitz bath



FIG. 1 is a perspective view of a sitz bath;

FIG. 2 is a left side view and mirror image of the right side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The dashed or dotted lines form no part of the claimed design. 

CLAIM The ornamental design for a sitz bath, as shown and described. 